Look what i'll be getting installed tomorrow......stock cats with straight pipes after that, what should i expect my gains to be up top ? and how much loss of tq ?

 

No idea about power gains..but you are a braver man than I.

 

let me know how it feel after you do it.. im a phone call away from scheduling the exact mod on my car....

 

its pointless on stock K16s... do not expect miracles...
hope u like it... cause ur neighbors will not.
markski

 

I'm not expecting huge advantage ... all i want is a faster spoil up..but my biggest concern is less weight in the rear which is a huge plus and a better sound...both of my neigbors have porsches and one of them has straight pipes on his, my other neighbor has a truck with straight pipes so i guess i was the only one in the block without it

 

Those OE cats look mighty restrictive, creating backpressure. The reduction of backpressure versus the OE muffler is significant, but unconditional. I would be surprised to see any marginal amt of hp/tq dip with this setup. For quicker spool time, adjusting wastegates will yield noticeable/true results. This should definitely make power.

good luck!

 

consider FLASHING the car instead. Maybe you get 20hp by removing the exhaust. TERRIBLE sound after maybe a week you'll go nuts. Not pretty, just sounds like a trash can rolling down an alleyway. Get the car flashed and you'll be good for 100HP and 100TQ on REALLY GOOD GAS. You do a nice twin canister design on the exhaust and you'd get the weight savings and the power combined. Then replace your clutch since the extra TQ will chew up whatever stock disk you may have left. Overboosting K16's won't work as they are so small that wihle they produce great low-speed torque numbers, they are too estrictive for MAINTAINING that torque above 3,500RPM's

 

consider FLASHING the car instead. Maybe you get 20hp by removing the exhaust. TERRIBLE sound after maybe a week you'll go nuts. Not pretty, just sounds like a trash can rolling down an alleyway. Get the car flashed and you'll be good for 100HP and 100TQ on REALLY GOOD GAS. You do a nice twin canister design on the exhaust and you'd get the weight savings and the power combined. Then replace your clutch since the extra TQ will chew up whatever stock disk you may have left. Overboosting K16's won't work as they are so small that while they produce great low-speed torque numbers, they are too estrictive for MAINTAINING that torque above 3,500RPM's

 

With cats and straight pipes not only will you go deaf...but the car will feel CONSIDERABLY slower...

 

I Heard It Will Feel Faster On Higher Rpm's... Slightly Slower On Take Offs.

 

It feel that chip gives me less power, than straight pipes(haven't dynoed jet) with K16-s
Build like this http://www.wirx.ee/porsche/?dir=.%2Fsumps%2F
And you gain more tq/hp @low and high rpms....much more
Best mod I have
Sounds like this(real life 10x better) http://www.youtube.com/watch?v=PVbzBFpDB8U#GU5U2spHI_4
Much better throttle response and defenitly more power @~1500rpm

 

Sounds pretty awesome! Any flybys at WOT? I'd love to hear more!

 

is that with l/16's or k24's?

 

stock K16-s
here is one wot in tunnel http://www.youtube.com/watch?v=bnY2jCTnIDk
as you hear nokia mic can't handle this

 

It felt waaaay slower no matter how fast or slow I was going